Notes
A.
Performance and quality attributes and conditions not expressly stated in this specification document are intended to be excluded and do not form a part of this specification document.
B.
Electrical specifications and performance data contained in this specification document are based on Mini-Circuit’s applicable established test performance criteria and measurement instructions.
C.
The parts covered by this specification document are subject to Mini-Circuits standard limited warranty and terms and conditions (collectively, “Standard Terms”); Purchasers of this part are entitled
to the rights and benefits contained therein. For a full statement of the Standard Terms and the exclusive rights and remedies thereunder, please visit Mini-Circuits’ website at www.minicircuits.com/MCLStore/terms.jsp
Mini-Circuits
®
www.minicircuits.com P.O. Box 35166, Brooklyn, NY 11235-0003 (718) 934-4500 sales@minicircuits.com
Typical Performance Data
Electrical Specifi cations
Maximum Ratings
Pin Connections
Features
• very fl at coupling
• very broadband, multi octave
• temperature stable, LTCC base
• all welded construction
• leads attached for better solderability
• micro miniature coupler
• aqueous washable
• protected by US Patents 6,140,887 & 6,784,521
INPUT 3
OUTPUT 4
COUPLED 1
GROUND 2
ISOLATE (DO NOT USE) 6 Applications
• CATV
Operating Temperature -40°C to 85°C
Storage Temperature -55°C to 100°C
Frequency
(MHz)
Mainline Loss
(dB)
In-Out
Coupling
(dB)
In-Cpl
Directivity
(dB)
Return Loss
(dB)
In CplOut
DBTC-20-4-75+
MAINLINE LOSS
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
0 250 500 750 1000 1250
FREQUENCY (MHz)
MAINLINE LOSS (dB)
at RF level of -10 dBm
DBTC-20-4-75+
COUPLING & DIRECTIVITY
5
10
15
20
25
0 250 500 750 1000 1250
FREQUENCY (MHz)
COUPLING & DIRECTIVITY
(dB)
COUPLING
DIRECTIVITY
at RF level of -10 dBm
DBTC-20-4-75+
RETURN LOSS
0
10
20
30
40
50
0 250 500 750 1000 1250
FREQUENCY (MHz)
RETURN LOSS (dB)
IN OUT COUPLING
at RF level of -10 dBm
Directional Coupler
Surface Mount
FREQ.
(MHz)
COUPLING
(dB)
MAINLINE LOSS*
(dB)
DIRECTIVITY
(dB)
VSWR**
(:1)
POWER
INPUT
(W)
Max.
Flatness
LMU U1LMU U1L
Max.
MUU1
Max.Nom. Typ. Max. Ty p. Max. Typ. Max. Ty p . Max. Ty p. Min. Ty p . Min. Ty p. Min. Typ. Min. Ty p.
5-1250 20.5±0.5 ±0.9 0.4 0.7 0.6 0.9 0.8 1.2 1.1 1.5 20 16 19 13 11 7 9 6 1.4 0.5 1.0
L = 5-50 MHz M = 50-500 MHz U = 500-1000 MHz U1= 1000 - 1250 MHz
* Includes theoretical coupled power loss of 0.04 dB at 20 dB coupling
** For coupled port VSWR above 500 MHz, 1.6:1 typ.
Demo Board MCL P/N: TB-279
Suggested PCB Layout (PL-151)
75Ω, 20dB coupling, 5 to 1250 MHz
5.00 0.44 20.47 19.75 25.31 27.17 23.11
10.00 0.41 20.40 20.84 27.21 29.99 24.93
100.00 0.46 20.44 21.31 25.84 28.18 21.27
400.00 0.61 20.30 17.52 17.30 17.77 11.54
600.00 0.74 19.99 14.13 15.36 15.44 8.94
800.00 0.85 19.98 11.96 14.44 14.31 7.43
1000.00 0.98 20.07 10.26 13.93 13.80 6.52
1050.00 1.01 20.13 10.01 13.85 13.76 6.23
1100.00 1.06 20.21 9.66 13.53 13.35 6.08
1250.00 1.18 20.53 8.81 13.22 12.20 5.55
Electrical Schematic
Permanent damage may occur if any of these limits are exceeded.
DBTC-20-4-75X+
REV. OR
M135594
ED-10793A/1
DBTC-20-4LX+
WP/CP/AM
120216
top hat
™
CASE STYLE: AT1667-1
PRICE: $1.99 ea. QTY (20)
$1.69 ea. QTY (1000)
Outline Drawing
Outline Dimensions ( )
inch
mm
ABCDEF
.150 .150 .150 .050 .030 .025
3.81 3.81 3.81 1.27 0.76 0.64
G H J K wt
.028 .050 .160 .030 grams
0.71 1.27 4.06 0.76 0.10
Suggested Layout,
Tolerance to be within ±.002
PCB Land Pattern
TOTAL THICKNESS: .013 inch MAX.
+RoHS Compliant
The +Suffix identifies RoHS Compliance. See our web site
for RoHS Compliance methodologies and qualifications
